Nexperia Automotive linear LED driver IC NEX13120-Q100

NEX13120-Q100 is an AEC-Q100 Grade 1 qualified 12-channel, 40 V high-side LED driver with up to 100 mA output current per channel, PWM and analog dimming support, and MTP for configurable depending on application requirements in Automotive lighting systems.

NEX13120-Q100 supports 8-bit output current with high accuracy from channel to channel and device to device, channels can be used in parallel to support higher current output than 100 mA. The low dropout of the device helps to eliminate the heat generation of the device itself. The device integrates UART over CAN as the digital interface to enable long distance off-board communication, which is a typical scenario for Automotive exterior lighting where different lamp functions are typically located in different PCB boards. NEX13120-Q100 also supports LED open-circuit, short to ground, and single LED short-circuit diagnostics. Additionally, a configurable watchdog automatically sets the part into Fail-Safe states when the CAN bus connection is lost.

NEX13120-Q100 can operate at a junction temperature range from -40 °C to +150 °C in a thermally enhanced 24-pin HTSSOP24 package.

Key features

• AEC-Q100 qualified for automotive applications. Specified from-40 °C to 125 °C
• Function safety capable. Provide documents to support function safety design
• 12-channel precision high-side current output:
  • Vbat: 4.5 V to 36 V and Vs: 3.8 V to 36 V
  • Up to 100 mA channel current per channel
  • 2-bit global, 6-bit independent current setting
  • Current accuracy within ±5 % from 18 mA to 100 mA
  • Low voltage drops: 600 mV at 100 mA
  • 12-bit independent PWM dimming
  • Programmable PWM frequency: 50 Hz to 23.4 kHz
  • Linear and exponential dimming method
• Integrated UART interface:
  • Data rate up to 2 Mbit/s
  • Support UART data format
  • Support 27 slave address set by resister
• Diagnostics and protections:
  • Programmable Fail-Safe state
  • LED open-circuit detection
  • LED short-circuit detection
  • Single-LED short-circuit diagnostic
  • Programmable low-Vs detection
  • Open-drain FLT pin for fault indication
  • Watchdog and CRC for data line
  • MTP ECC check
  • 8-bit ADC for pin voltage measurement
  • Over-temperature protection
• ESD protection:
• HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
• CDM: ANSI/ESDA/JEDEC JS-002 class C2a exceeds 500 V

Applications

• Automotive exterior rear light (daytime running, signal / indication)
• Automotive exterior headlight
• Industrial lighting systems
• Street lighting, tunnel or bridge lighting